<template>
  <div id="app">
    <div class='box'>
       <div class='left'></div>
       <div class='content'></div>
       <div class='right'></div>
    </div>
  </div>
</template>

<script>
import HelloWorld from './components/HelloWorld.vue'

export default {
  name: 'App',
  components: {
    HelloWorld
  }
}
</script>

<style lang='less' scoped>
.box{
  width:100%;
  height:200px;
  display:flex;
}
*{
  margin:0;
  padding:0;
}
.left{
  flex:1;
  background-color: red;
}
.content{
  flex: 1;
  background-color: yellow;

}
.right{
  flex: 1;
  background-color: red;

}
</style>
